Angels do not accompany the travellers who have with them a dog and a bell.  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ لاَ تَصْحَبُ الْمَلاَئِكَةُ رُفْقَةً فِيهَا كَلْبٌ وَلاَ جَرَسٌ  

This hadith has been reported on the authority of Suhail with the same chain of transmitters.  

عَنْ سُهَيْلٍ بِهَذَا الإِسْنَادِ  

The bell is the musical instrument of the Satan.  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ الْجَرَسُ مَزَامِيرُ الشَّيْطَانِ