The Prophet ﷺ said: When one of you comes to an assembly, he should give a salutation and if he feels inclined to get up, he should give a salutation, for the former is not more of a duty than the latter. (Using translation from Abū Dāʾūd 5208)
"إذا انْتهى أحدُكم إلى المجلس فْليسلمْ فإنْ بَدَا له أن يجلسَ فليجلسْ، ثمّ إذا قامَ فليسلمْ فليستْ الأُولى بأحقَّ مِنَ الآخرةِ" .