Hadithcore
Riyad as-Salihin, 1800

'Ali (May Allah be pleased with him) said:

I have retained in my memory the saying of the Messenger of Allah (ﷺ) that: "No one is considered an orphan after he has attained the age of maturity; and it is unlawful to remain silent from dawn till night." <b>[Abu Dawud with Hasan (good) Isnad]</b>.

عن عليّ رضي الله عنه قال‏:‏ حفظت عن رسول الله صلى الله عليه وسلم ‏:‏ ‏

‏لا يتم بعد احتلام، ولا صمات يوم إلى الليل‏

‏‏.‏ قال الخطابي في تفسير هذا الحديث‏:‏ كان من نسك الجاهلية الصمات، فنهوا في الإسلام عن ذلك، وأمروا بالذكر والحديث بالخير‏.‏

References1 variant
In-Book Reference
Book 17, Hadith 290
Sharh · explanationclick to expand
<b>Guidance from the Hadiths:</b><br> 1) It is obligatory to differ from the people of the pre-Islamic period of ignorance in terms of their deeds and conditions. So, it is not permissible for a person to worship Allah by keeping silent till night because this is not part of the Islamic guidance.<br> 2) If a person makes a vow to be silent, his vow should not be fulfilled, for it is a vow of sin and not a valid one.<br> ‘Ā’ishah (may Allah be pleased with her) reported that the Messenger of Allah (may Allah’s peace and blessings be upon him) said: “Whoever makes a vow to obey Allah should obey Him; and whoever makes a vow to disobey Allah should not disobey Him.” [Narrated by Al-Bukhāri]