You mentioned that the reason for the spread of the Daʿwah of Shaykh Muḥammad ibn ʿAbd al-Wahhāb and its benefits was due to his sincerity. Therefore, how do we know that we have actualised it and we are receiving its result?

Shaykh Ṣāliḥ Al-Fawzān:

This is something that Allāh places in you. If sincerity appears upon you and a righteous intention then this is what is intended. Look to your intention, is it an intention for Allāh or is it is a intention for wealth, praise or the likes of that? It is said that “Your intention is your mount [riding beast]” and this is correct. Your intention is your mount [riding beast]. So look to your intention when calling to Allāh, do you want praise, fame or position, then you won’t have any share [of reward] in the hereafter. If you want the face of Allāh and you want sincerity for the sake of Allāh and to make the worship free of shirk, then you are upon good.