Sura al-Baqara 2:68

قَالُوا۟ ٱدْعُ لَنَا رَبَّكَ يُبَيِّن لَّنَا مَا هِىَ قَالَ إِنَّهُۥ يَقُولُ إِنَّهَا بَقَرَةٌ لَّا فَارِضٌ وَلَا بِكْرٌ عَوَانٌۢ بَيْنَ ذَٰلِكَ فَٱفْعَلُوا۟ مَا تُؤْمَرُونَ

qālū idʿu la-nā rabbaka yubayyin lanā mā hiya qalā innahu yaqūlu innahā baqaratun lā fāriḍun wa-lā bikrun ʿawānun bayna dhālika fa-ifʿalū mā tuʾmarūna

They said: "Beseech on our behalf Thy Lord to make plain to us what (heifer) it is!" He said; "He says: The heifer should be neither too old nor too young, but of middling age. Now do what ye are commanded!"