On the Day of Resurrection during the evaluation of actions, God Most Exalted will command the angels:
"Examine the daily prayers of My servants and see if they were performed partially or completely. If performed completely, they will be inscribed as such. If only partially, look to see if My servants have offered prayers in addition to the basic prayers that I have required. Complete with these additional prayers the partial prayers of My servants."
After speaking these words from God, Muhammad the Messenger (ﷺ) commented:
"It is only through Divine Generosity that any of our good actions are accepted."
(Khabar 72 appears is cited in Ibn Arabi's 'Mishkat al-Anwar')
'Ibn al-Arabi: The Mysteries of Bearing Witness to the Oneness of God and Prophethood of Muhammad'
By Muhyi al-Din Ibn al-Arabi, by Aisha Bewley (Translator)
The master of Islamic spirituality describes the first pillar of Islam, bearing witness to the Oneness of God and that Muhammad is a Messenger of God.