Imam Ibn Taymiyyah mentioned a golden principle about taking payment for acts of worship. As part of his reply about whether it is permitted to charge a fee to perform pilgrimage on someone else’s behalf (hajj al-badal), he stipulated this rule: أَنْ يَأْخُذَ لِيَحُجَّ لا أَنْ يَحُجَّ لِيَأْخُذَ ‘He may take [payment] to [help him] perform the pilgrimage; he may…