It is narrated from Sayyiduna Abu Dharr al-Ghifari (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "There is no Arab horse except that every day it is permitted two supplications. It says: 'O Allah, You have entrusted me to whomever You have entrusted me among the children of Adam, so make me among the most beloved of his family and wealth to him.'"
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الفيء والغنيمة / 12901