It is narrated from Abu Ishaq that a boy from his tribe, whose name was Mirthad and whose (milk) teeth had fallen out, made a bequest of forty dirhams for his wet nurse from among the people of Hira. Judge Shurayh approved it and said: Whoever speaks the truth, we have approved it.
Hadith Referenceسنن دارمي / من كتاب الوصايا / 3318