﴿ وَلَهُمْ فِيهَا مَنَٰفِعُ وَمَشَارِبُ ۖ أَفَلَا يَشْكُرُونَ ﴾

“and may have [yet other] benefits from them, and [milk] to drink? Will they not, then, be grateful? (”

And there are other benefits for them therein such as their wool fur and hairs and drinks made from their milk mashārib is the plural of mashrab meaning shurb ‘a drink’; or what is meant is the place from which the drink issues. Will they not then give thanks? to the One Who has bestowed these graces upon them and so become believers? In other words they do not do any of this.