It is narrated from Sayyidah Aishah (may Allah be pleased with her) that he (peace and blessings be upon him) loved to begin (things) from the right: for example, in putting on his sandals, in combing his hair, in performing ablution, and in all his affairs.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 1033