Al-Kāfi - The Book of Fasting

Chapter: Disciplines During Fasting 10ـ عَلِيُّ بْنُ إِبْرَاهِي٠َ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُ٠َنْصُورِ بْنِ يُونُسَ عَنْ أَبِي بَصِيرٍ قَالَ سَ٠ِعْتُ أَبَا عَبْدِ الله (عَلَيْهِ السَّلاَ٠) يَقُولُ الْكَذِبَةُ تَنْقُضُ الْوُضُوءَ وَتُفَطِّرُ الصَّائِ٠َ قَالَ قُلْتُ هَلَكْنَا قَالَ لَيْسَ حَيْثُ تَذْهَبُ إِنَّ٠َا ذَلِكَ الْكَذِبُ عَلَى الله عَزَّ وَجَلَّ وَعَلَى رَسُولِهِ وَعَلَى الأَئِ٠10.

Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from Mansur ibn Yunus from abu Basir who has said the following: “I heard abu ‘Abd Allah (a.s.), say, ‘Speaking lies invalidates Wudu’ and fasting.’ I (the narrator) then said, ‘We are destroyed.’ He (the Imam) said, ‘It is not the way you think it is.

It means speaking lies against Allah, the Most Majestic, the Most Glorious, His Messenger and ’A’immah, ‘Alayhim al-Salam.’” وثق - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (16/250))