It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) said: "Jibril (peace be upon him) said: 'Prayer has been made beloved to you, so take of it as much as you wish.'"
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 12873