It was narrated from Ibn 'Umar that:

the Messenger of Allah was asked about mastigures when he was on the Minbar and he said? "I do not eat them, but I do not say that they are Haram."

أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا مَالِكٌ، عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ، عَنِ ابْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ ﷺ وَهُوَ عَلَى الْمِنْبَرِ سُئِلَ عَنِ الضَّبِّ فَقَالَ " لاَ آكُلُهُ وَلاَ أُحَرِّمُهُ " .