highlighted words differ between verses
وَإِنَّ لَكُمْ فِى ٱلْأَنْعَـٰمِ لَعِبْرَةً ۖ نُّسْقِيكُم مِّمَّا فِى بُطُونِهَا وَلَكُمْ فِيهَا مَنَـٰفِعُ كَثِيرَةٌ وَمِنْهَا تَأْكُلُونَ
And there is certainly a lesson for you in cattle, from whose bellies We give you ˹milk˺ to drink, and in them are many other benefits for you, and from them you may eat.
وَإِنَّ لَكُمْ فِى ٱلْأَنْعَـٰمِ لَعِبْرَةً ۖ نُّسْقِيكُم مِّمَّا فِى بُطُونِهِۦ مِنۢ بَيْنِ فَرْثٍ وَدَمٍ لَّبَنًا خَالِصًا سَآئِغًا لِّلشَّـٰرِبِينَ
And there is certainly a lesson for you in cattle: We give you to drink of what is in their bellies, from between digested food and blood: pure milk, pleasant to drink.
Both describe taking drink from the bellies of cattle but 16:66 uses the masculine 'butunihi' while 23:21 uses the feminine 'butuniha'.
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