al-Hakam bin 'Utayba الحكم بن عتيبة · The Chapters on Expiation

the Messenger of Allah (ﷺ) said: "Whoever takes an oath, and swears, saying: 'By Al-Lat and Al-Uzza,' let him say:'La ilaha illallah.' "

a woman came to the Messenger of Allah (ﷺ) and said: "My mother has died, and she had made a vow to fast, but she died before she could fulfill it. The Messenger of Allah (ﷺ) said: 'Let her guardian fast on her behalf ."