Sahih Muslim Hadith 6273. Narrated by Aisha: Allah’s Apostle (peace be upon him) said: Aisha, verily Allah is kind and He loves kindness and confers upon kindness which he does not confer upon severity and does not confer upon anything else .
Al-Tirmidhi Hadith 1910. Narrated by Jabir ibn Abdullah: Allah’s Messenger (peace be upon him) said, “Every act of kindness is “sadaqah, and kindness includes meeting your brother with a cheerful face and pouring water from bucket into your brother’s vessel.” Ahmad and Tirmidhi transmitted it.
Al-Tirmidhi Hadith 3364. Narrated by Jabir ibn Abdullah: The Prophet (peace be upon him) said, “If anyone possesses these three characteristics Allah will give him an easy death and bring him into His Paradise: gentleness towards the weak, affection towards parents, and kindness to slaves.” Tirmidhi transmitted it, saying this is a gharib tradition.
Sunan of Abu-Dawood Hadith 1668. Narrated by Abdullah ibn Umar: The Prophet (peace be upon him) said: If anyone seeks protection in Allah’s name, grant him protection; if anyone begs in Allah’s name, give him something; if anyone gives you an invitation, accept it; and if anyone does you a kindness, recompense him; but if you have not the means to do so, pray for him until you feel that you have compensated him.
Al-Tirmidhi Hadith 4925. Narrated by Thawban: Allah’s Messenger (may peace be upon him) said: “Only supplication averts the decree, only kindness prolongs life, and a man is deprived of provision for a fault he commits.” Transmitted by Ibn Majah.
Al-Tirmidhi Hadith 4643. Narrated by Ali ibn AbuTalib: Allah’s Messenger (peace be upon him) said, “One Muslim should do six acts of kindness to another: he should salute him when he meets him, accept his invitation when he gives one, say ‘Allah have mercy on you’ when he sneezes, visit him when he is ill, follow his bier when he dies, and like for him what he likes for himself.” Transmitted by Tirmidhi and Darimi.
Sahih Muslim Hadith 6274. Narrated by Aisha: Allah’s Apostle (peace be upon him) said: Kindness is not to be found in anything but that it adds to its beauty and it is not withdrawn from anything but it makes it defective.