FIQH US SUNNAH

Sadaqah is not restricted to any special deed of righteousness. The general rule is that all good deeds are sadaqah. Some of them are as follows: 

The Messenger of Allah, upon whom be peace, said: "Every Muslim has to give sadaqah." The people asked: "O Prophet of Allah, what about the one who has nothing?" He said: "He should work with his hands to give sadaqah." They asked: "If he cannot find [work]?" He replied: "He should help the needy who asks for help." They asked: "If he cannot do that?" He replied: "He should then do good deeds and shun evil, for this will be taken as sadaqah." This is related by al-Bukhari and others. 
The Messenger of Allah, upon whom be peace, said: "Sadaqah is prescribed for every person every day the sun rises. To administer justice between two people is sadaqah. To assist a man upon his mount so that he may ride it is sadaqah. To place his luggage on the animal is sadaqah. To remove harm from the road is sadaqah. A good word is sadaqah. Each step taken toward prayer is sadaqah." This is related by Ahmad and others.

Abu Dhar al-Ghafari said: "The Messenger of Allah, upon whom be peace, said: 'Sadaqah is for every person every day the sun rises.' I said: 'O Messenger of Allah, upon whom be peace, from what do we give sadaqah if we do not possess property?' He said: 'The doors of sadaqah are takbir [i.e., to say: Allahu-akbar, Allah is Great]; Subhan-Allah [Allah is free from imperfection]; Alhamdulillah [all praise is for Allah]; La -ilaha-illallah [there is no god other than Allah]; Astaghfirul-lah [I seek forgiveness from Allah]; enjoining good; forbidding evil; removing thorns, bones, and stones from the paths of people; guiding the blind; listening to the deaf and dumb until you understand them; guiding a person to his object of need if you know where it is; hurrying with the strength of your legs to one in sorrow who is appealing for help; and supporting the weak with the strength of your arms. These are all the doors of sadaqah. [The sadaqah] from you is prescribed for you, and there is a reward for you [even] in sex with your wife.' " This is related by Ahmad, and the wording is his. According to Muslim, they said: "O Messenger of Allah, upon whom be peace, is there a reward if one satisfies his passion?" He said: "Do you know that if he satisfies it unlawfully he has taken a sin upon himself? Likewise, if he satisfies it lawfully, he is rewarded."

It is related following Abu Dhar that the Messenger of Allah, upon whom be peace, said: "Sadaqah is prescribed for each descendant of Adam every day the sun rises." It was asked: "O Messenger of Allah, upon whom be peace, from what do we give sadaqah every day?" He said: "The doors of goodness are many--the tasbih [to say 'Subhaan-Allah'], the tamhid [to say 'Alhamdu lillah'], the tahlil [to say 'La-ilaha-illallah], enjoining good, forbidding evil, removing harm from the road, listening to the deaf, leading the blind, guiding one to the object of his need, hurrying with the strength of one's legs to one in sorrow who is asking for help, and supporting the feeble with the strength of one's arms--all of these are sadaqah prescribed for you." This is related by Ibn Hibban in his Sahih. Al-Bukhari related it in a shortened form and added in his report: "Your smile for your brother is sadaqah. Your removal of stones, thorns, or bones from the paths of people is sadaqah. Your guidance of a person who is lost is sadaqah." 
The Messenger of Allah also said: "He from among you who is able to protect himself from the Fire should give sadaqah, even if but with half a date. If he does not find it, then with a good word." The Messenger of Allah, upon whom be peace, said: "Allah, the Majestic and Mighty, shall say on the Day of Judgment: 'O son of man! I was ill and you did not visit me.' He will reply: 'O my Lord! How could I visit You and You are the Lord of the Worlds?' Allah shall say: 'Did you not know that My slave, so-and-so, was ill and you did not visit him? If you had visited him, you would have found Me with him. O son of man! I asked you for food and you did not give it to me.' He will reply: 'O my Lord! How could I give You food--You are the Lord of the Worlds?' Allah shall say: 'Did you not know that My slave, so-and-so, asked you for food and you did not give it to him? Did you not know that if you had given the food, you would have found that with Me? O son of man! I asked you to quench My thirst and you did not.' He will say: 'O my Lord! How could I quench Your thirst--You are the Lord of the Worlds?' Allah shall say: 'My slave, so-and-so, asked you to quench his thirst and you did not. If you had given him to drink, you would have found that with Me.' " This is related by Muslim.

The Messenger of Allah, upon whom be peace, said: "A Muslim does not plant or sow anything from which a person, an animal, or anything eats but it is considered as sadaqah from him." This is related by al-Bukhari.

The Messenger of Allah, upon whom be peace, said: "Every good deed is sadaqah. To meet your brother with a smiling face and to pour out from your bucket into his container are sadaqah."