Whatever has been mentioned till now concerns the biological parents; however the spiritual fathers or the guides of humanity are Hazrat Muhammad (s.a.w.s.) and his Purified Ahlul Bayt (a.s.). All of us are spiritually related to them. In every circumstance their followers can be enriched by virtues and get protection from calamities. The Holy Prophet (s.a.w.s.) has informed, "I and Ali (both) are the fathers of this Ummat." The spiritual fathers are superior to the biological parents in a manner that the soul is superior to the physical body. Similarly the punishment of the 'Aaq' of the spiritual fathers is much more severe than that of the 'Aaq' of ordinary parents.
High Rewards and More Punishment
The rewards for kindness to the spiritual father is a thousand times more than kindness to the real parents. In the same way the 'Aaq' of a spiritual father is far more severely punishable, i.e., Heaven is prohibited for the person who disobeys the spiritual father, and none of his deeds are accepted even if he prays in the nights and fasts during the day. The punishment for those who do not acknowledge the Wilayat of Ahlul Bayt (a.s.) is more severe because the Ahlul Bayt (a.s.) are the real spiritual fathers. It would be wrong to consider all the Quranic verses and traditions in connection with Uqooq-e-Waledain to be restricted to biological parents. The Holy Quran and hadith are unanimous in declaring that the commands for Uqooq-e-Waledain apply equally and more stringently to the spiritual as well as biological parents. The ultimate argument in this connection is the Quranic verse wherein Allah has ordered obedience towards the parents along with His own worship.
"Be grateful to Me and both your parents."
(Surah Luqman 31:14)
"And your Lord has commanded that you shall not serve (any) but Him, and goodness to your parents."
(Surah Bani Israel 17:23)
A similar reference to the Holy Prophet (s.a.w.s.) and the Ahlul Bayt (a.s.) is to be found in the chapter of Sileh Rahem. Two traditions are reported from Imam Ja'far as-Sadiq (a.s.)
The first tradition is when Umroo bin Yazid enquired about the meaning of the following Ayat of Surah Raad:
"And those who join that which Allah has bidden to be joined and have awe of their Lord and fear the evil reckoning."
(Surah Raad 13:21)
The next tradition is concerned with the tafsir of the same 'Ayat'. It says that the above Ayat has been revealed about the Sileh Rahem to Muhammad (s.a.w.s.) and the Ahlul Bayt (a.s.), the close relatives of the Momin being included in it. The tradition further says,
"And do not be of those who restrict the Ayat to some particular personalities. But whenever you hear of a verse regarding a kind of people you must consider it to be applicable to the other people of the same kind."
The Uqooq of Spiritual Fathers
The Uqooq of the spiritual fathers means to disobey their commands and to be heedless of their orders. To sever relationships with them in this world by not acknowledging their leadership. Imam Reza (a.s.) asked,
"Won't you feel bad if your parents are displeased and say that you are not their child?"
Those who were present answered, "Yes". Imam (a.s.) continued,
"The spiritual parents are superior to your biological parents. Do not give them an opportunity to say this. Rather consider yourself lucky be to their son or daughter."
Breaking up relations
The seventh Greater Sin is the breaking up of relations with one's kith and kin. This is clearly verified by Imam Ja'far as-Sadiq (a.s.) as well as Imam Musa al-Kazim (a.s.), Imam Ali ar-Reza (a.s.) and Imam Muhammad al-Taqi (a.s.). The Quran has also decreed Hell-fire and the curse of Allah upon those who cut off ties with their relatives.
Imam Ja'far as-Sadiq (a.s.) says:
"Beware of those who cut off relations because I have found them cursed thrice in the Quran."
1) Surah Baqarah, Ayat No.27
Whoever break the covenant of Allah after its confirmation and cut asunder what Allah has ordered to be joined, and make mischief in the land, these it is that are the losers.
In the Quranic terminology when the word Khaasir (loser) is used it denotes the one who is to be in loss, or rather the one who is cursed.
2) Surah Raad, Ayat No.25
And those who break the covenant of Allah after its confirmation and cut asunder which Allah has ordered to be joined and make mischief in the land; (as for) those, upon them shall be curse and they shall have the evil (issue) of the abode.
3) Surah Muhammad, Ayat No.22-23
But if you held command, you were sure to make mischief in the land and cut off the ties of kinship. Those it is whom Allah has cursed, so He has made them deaf and blinded their eyes.
The Denouncement of "Cutting Off Kinship Ties" in the Traditions
Numerous traditions have reached us in this regard. A few of these reports are quoted here:
The Holy Prophet (s.a.w.s.) states:
There is destruction in enmity, especially with the relatives. I do not mean the destruction of the law but rather the destruction of the religion. (Enmity among people not only harms the hair and the body, but it also destroys one's religion).
(Al Kafi, Chapter of Qate-Rahem)
Imam Ja'far as-Sadiq (a.s.) says:
"Protect yourself from 'Haliqa' for it destroys the people." The narrator asked "What is 'Haliqa'", Imam replied, "To sever relations."
The Worst Deed in the Eyes of Allah
A man approached the Holy Prophet (s.a.w.s.) and enquired, "What is the worst deed in the eyes of Allah?"
The Holy Prophet (s.a.w.s.) replied,
"To attribute partners to Allah."
The man then asked, "After this which is the worst sin?"
The Holy Prophet (s.a.w.s.) said:
"To sever relations".
After this the same person asked, "After this which is the worst sin?"
The Holy Prophet (s.a.w.s.) replied:
"To enjoin the evil and to forbid the good (deeds)."
(Al Kafi)
source : GREATER SINS by Ayatullah-ul-Uzma Sayed Abdul Husain Dastghaib Shirazi (r.a.)