"The Messenger of Allah said: 'If a dog licks the vessel of anyone of you, let him wash it seven times.'" (Using translation from Ibn Mājah 366)
وَقَالَ رَسُولُ اللهِ ﷺ طُهْرُ إِنَاءِ أَحَدِكُمْ إِذَا وَلَغَ الْكَلْبُ فِيهِ أَنْ يَغْسِلَهُ سَبْعَ مَرَّاتٍ