It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Allah, the Mighty and Majestic, loves that the concessions He has granted be acted upon, just as He loves that the commands He has made obligatory be acted upon."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 11831