TABARANI 11068:
from Ibn ʿAbbās —
[Machine] That the Messenger of Allah ﷺ recited this verse, "Fear Allah as He should be feared." Then he said, "If a drop of the Zaqoom plant were to drop into the oceans of the world, it would spoil their sustenance. So, how would it be for the one who consumes it?"
الطبراني ١١٠٦٨:
عن ابن عباس —
أَنَّ رَسُولَ اللهِ ﷺ تَلَا هَذِهِ الْآيَةَ {اتَّقُوا اللهَ حَقَّ تُقَاتِهِ} الْآيَةَ فَقَالَ «لَوْ أَنَّ قَطْرَةً مِنَ الزَّقُّومِ قُطِرَتْ فِي بحارِ الدُّنْيَا لَأَفْسَدَتْ عَلَيْهِمْ مَعَايِشَهُمْ كَيْفَ بِمَنْ يَكُونُ طَعَامَهُ؟»