Tabeeya of Guru Sahib

Sat Sri Akal ji,
Could someone please explain what is meant by, 'Tabeeya of Guru Sahib,' please, ji?

bhul chuk muaf Waheguru

VAHEGURU JI KA KHALSA, VAHEGURU JI KI FATEH

From Mahan Kosh:

ਤਾਬੇ ਬੈਠਣਾ - tābē baitdhanā
ਗੁਰੂ ਗ੍ਰੰਥਸਾਹਿਬ ਦੀ ਹਾਜਰੀ ਵਿੱਚ ਚੌਰ ਲੈਕੇ ਬੈਠਣਾ.

Searched here:

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VAHEGURU JI KA KHALSA, VAHEGURU JI KI FATEH

dhan Guru Pyareo Jio