Letting Elders Enter First
Al-Khaṭīb Al-Baghdādī has mentioned this heading and quotes the following general aḥādīth. He then reports narrations from some of the Salaf about letting elders enter first.
Blessings are with your seniors.
Ibn Ḥibbān et al. Graded ṣaḥīh by Al-Albānī and others. See Al-Ṣaḥīḥah no. 1778.