Ibn Shihab reported that Allah's Messenger (ﷺ) made an expedition to Tabuk and he (the Holy Prophet) had in his mind (the idea of threatening the) Christians of Arabia in Syria and those of Rome. Ibn Shihab (further) reported that 'Abd al-Rahman b. 'Abdullah b. Ka'b informed him that Abdullah b. Ka'b who served as the guide of Ka'b b. 'Malik as he became blind that he heard Ka'b b. Malik narrate the story of his remaining behind Allah's Messenger (ﷺ) from the Battle of Tabuk. Ka'b b. Malik said:
وَحَدَّثَنِيهِ مُحَمَّدُ بْنُ رَافِعٍ، حَدَّثَنَا حُجَيْنُ بْنُ الْمُثَنَّى، حَدَّثَنَا اللَّيْثُ، عَنْ عُقَيْلٍ، عَنِ ابْنِ شِهَابٍ، بِإِسْنَادِ يُونُسَ عَنِ الزُّهْرِيِّ، سَوَاءً .