Good praise, and praising one who has done a kindness

Al-Rabi' bin Ziyad said that Ka'b said: By Allah, praise of a servant does not become firm on earth until it has settled for him among the people of heaven as well.

Al-Awwam bin Hawshab said: Iyas bin Mu'awiyah and I met at a place called Dhat Irq, and we mentioned Ibrahim al-Taymi. Iyas said: "Were it not for the honour he holds in my heart, I would certainly praise him." I asked: "Do you know him?" He said: "Yes." I asked: "Then why do you dislike praising him?" He said: "Because it used to be said that praising is equivalent to giving payment."

Sayyiduna Anas (may Allah be pleased with him) said that the Muhajirun said: "O Messenger of Allah (peace and blessings be upon him)! We have seen no one better than the people we have come to, in spending generously out of much, and no one better in sharing and consoling when they have little. They have borne our expenses and made us partners in their joys. We fear that they will take away all of the reward." He (peace and blessings be upon him) said: "No, it is not so, as long as you praise them and pray to Allah for them."