"Allāh’s Messenger (صلى الله عليه وآله وسلم) said: when Allāh loves some person, He sends for Jibrīl and commands him: verily, I love such and such person; you should also love him, so Jibrīl loves him as well. Then Jibrīl proclaims in the heavens that Allāh loves such and such person; you should also love him. Then the residents of the heavens love him as well. Then his love is sent down to the earth (the world)."

Narrated by Abū Hurayrah (Radi Allah Ta'lah Anhu).  Muslim transmitted it in his as-Sahīh, b. of birr was-silah wal-ādāb (virtue, joining of the ties of relationship and good manners) ch.48 (4:2030#157/2637); Bakhārī narrated it at three places in his as-Sahīh: b. of bad’-ul-khalq (beginning of creation) ch.6 (3:1175#3037), b. of adab (good manners) ch.41 (5:2246#5693), and b. of tawhīd (Islamic monotheism) ch.33 (6:2721#7047); Ahmad bin Hambal in Musnad (2:413); Mālik bin Anas in al-Muwattā, b. of sha‘ar (hair) ch.5 (2:953#15); and Khatīb Tabrīzī in Mishkāt-ul-masābīh, b. of ādāb (good manners) ch.16 (3:74#5005). [src: Ch3 of Beseeching for Help, Tahir-ul-Qadri]

"The two feet of the Son of Adam will not move from near his Lord on the Day of Judgement until he is asked about five (matters): about his life - how he spent it; about his youth - how he took care of it; about his wealth - how he earned it and where he spent it; and about that which he acted upon from the knowledge he acquired"

(al-Tirmidhi) [src: p9, The Broken Chain (Ltd Edition), Aftab Ahmad Malik]

Narrated by Ubayy ibn Ka'b (Radi Allah Ta'lah Anhu): "I said: Allah's Messenger (Sal-allahu-aleihi-wasallam), I invoke blessings upon you very frequently. How much of my supplication should I devote to you. He said: As much as you like. I said: May it be a quarter? He said: As much as you like, but if you increase it, it will be good for you. I said: May it be a half? He said: As much as you like, but if you increase it, it will be good for you. I said: May it be two thirds? He said: As much as you like but if you make an increase in it, it will be better. I said: May I devote the whole of my supplication to you (that I make in my prayer)? Thereupon he said: In that case it will take care of you and your sins would be expiated."

Tirmidhi transmitted it. Hadith No. 929 of Mishkat al-Masabih. [src: road-to-heaven.com]