I am confused about whether the qubda lenght of the beard is sunnah or wajib

Khat by Osman Ozcay

I am confused about whether the qubda lenght of the beard is sunnah or wajib. Everybody is on the world wide web is saying that it is wajib to have at qudha lenght.

But then I read this:

Shaykh al-Hadith ‘Allama Ghulam Rasul Sa’idi al-Hanafi (hafizahu Llah) has a thorough analysis of the subject in his Sharh Sahih Muslim (urdu), where he quotes from many of the great Hanafi authorities, like Ibn Hummam (Fath al-Qadir), Badr al-Din al-‘Ayni (al-Binaya), Zayd al-Din Ibn Najim (Bahr al-Ra’iq), al-Shurunbulali (Hashiya al-Durar wa al-ghurar), Mulla ‘Ali al-Qari (al-Mirqat), al-Haskafi (Durr al-Mukhtar), Ibn ‘Abidin (Radd al-Muhtar), al-Tahtawi (Hashiya ‘ala Maraqi al-Falah) – Ramatu Llahi ‘alayhim ajma’in – all stating that the qubda is ‘sunna’.

Most of the quotes go in the line of ‘wa huwa ay al-qadr al-masnun fi al-lihya al-qubda’, or ‘… bi qadr al-masnun wa huwa al-qubda..’, or the like.