Rabi'ah bin Ka'b al-Aslami (RA):
The Prophet (ﷺ) said to me, "Ask." I said, "I ask your company in Paradise." He replied, "Or something else?" I said, "That is it (i.e. that is what I desire)." He said, "Then help me to achieve this for you by devoting yourself often to prostration."
[Reported by Muslim].