then they said please make a request to your lord to give us some details of the cow. moses answered allah says that the cow should neither be old nor immature but of middle age. do therefore as you are bidden.
قالوا ادع لنا ربك يبين لنا ما هي قال إنه يقول إنها بقرة لا فارض ولا بكر عوان بين ذلك فافعلوا ما تؤمرون