Abu Hurairah (may Allah be pleased with him) reports that the Prophet Muhammad (peace and blessings be upon him) said: "Whoever buys an animal whose milk has been withheld in its udder (for several days), then when he milks it, he has the option—if he wishes, he may return it along with one sa’ of dates." Imam Tirmidhi says:
There is also a narration on this topic from Anas and another companion.

Narrated from Abu Hurairah (may Allah be pleased with him) that the Prophet (peace and blessings of Allah be upon him) said: "Whoever buys an animal whose milk has been withheld in its udder, he has the option for three days. If he returns it, he should return with it a sa’ of grain, which should not be wheat." Imam Tirmidhi says:
1- This hadith is hasan sahih,
2- Our companions act upon this, among them are Shafi’i, Ahmad, and Ishaq bin Rahwayh. The meaning of your statement «لا سمراء» is «لابُرّ» , that is, it should not be wheat (it should be some other food; in the previous hadith, dates are mentioned).