O Prophet, tell My devotees who have believed, to establish Salah (regular five times daily prayers) and spend in charity openly and secretly out of the sustenance which We have given them, before the coming of that Day in which there will neither be trading nor any friendship.
Meaning:-
Devotee: a strong believer in a particular religion or god, follower, supporter, disciple.
Sustenance: food and drink regarded as a source of strength; nourishment.