Surah Al-Baqarah (The Cow), Verse 68

قَالُوا ادْعُ لَنَا رَبَّكَ یُبَیِّنْ لَّنَا مَا هِیَ قَالَ اِنَّهٗ یَقُوْلُ اِنَّهَا بَقَرَةٌ لَّا فَارِضٌ وَّلَا بِكْرٌ عَوَانٌ بَیْنَ ذٰلِكَ فَافْعَلُوْا مَا تُؤْمَرُوْنَ ۟

Qaalud-'u lanaa rabbaka yubaiyil lanaa maa hee; qaala innahoo yaqoolu innahaa baqaratul laa faaridunw wa laa bikrun 'awaanum baina zaalika faf'aloo maa tu'maroon

“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!"”

Quran 2:68 (Yusuf Ali Translation)