Is it obligatory to make the intention the night before for fasting six days of Shawwal?

Question:
May Allah reward you. Honorable Shaykh, the questioner says: What is the evidence for the obligation of making the intention the night before for fasting specific voluntary fasts, such as the six days of Shawwal? What is the evidence for the obligation of making the intention the night before for fasting the six days of Shawwal and the ten days of Dhul Hijjah?

Answer:
No one has said that it is obligatory to make the intention the night before for voluntary fasting. This applies only to obligatory fasting, such as Ramadan, making up missed fasts, expiation, or a vow. For obligatory fasting, the intention must be made during the night. As for voluntary fasting, it is not a condition; it is permissible to make the intention during the day, provided that one has not eaten or drunk after dawn. If one reaches the daytime without having eaten or drunk after dawn and makes the intention for voluntary fasting, there is no impediment.