It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) said: "We, the community of prophets, have been commanded to hasten the breaking of the fast, to delay the pre-dawn meal (suhur), and to place our right hands on our left hands (in prayer)."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 10805