Hadithcore
Riyad as-Salihin, 1705

Mu'adh bin Anas Al-Juhani (May Allah be pleased with him) said:

The Prophet (ﷺ) forbade (us) from sitting with our legs drawn up to our belly (Ihtiba') during the Friday Khutbah (religious talk before the prayer). <b>[Abu Dawud and At-Tirmidhi]</b>.

عن معاذ بن أنس الجهني، رضي الله عنه، أن النبي صلى الله عليه وسلم نهى عن الحبوة يوم الجمعة والإمام يخطب ‏(‏‏(‏رواه أبو داود والترمذي وقالا‏:‏ حديث حسن‏)‏‏)‏

References1 variant
In-Book Reference
Book 17, Hadith 195
Sharh · explanationclick to expand
<b>Guidance from the Hadith:</b><br> 1) The prohibition on the posture of Habwah is limited to the time of the Friday sermon only.<br> 2) It urges us to listen attentively to the sermon and focus on nothing else.<br> <br> <b>Benefit:</b><br> The purposes behind prohibiting the posture of Habwah include the following:<br> If one is wearing a single garment, his private parts may get uncovered as he moves while being in this posture. The posture of Habwah causes sleepiness and thus one will be distracted from listening to the sermon and his ablution may get broken, and Allah knows best.<br> <br> <b>Words in the Hadith:</b><br> Habwah: a posture of sitting in which the legs are contracted towards the belly, and the back is bent forwards and supported by putting part of the clothing or the arms across the knees.