Patanjali's yoga sutras

स तु दीर्घकालनैरन्तर्यसत्कारासेवितो दृढभूमि

sa tu dīrghakāla nairantarya satkāra-āsevito dr̥ḍhabhūmiḥ

sa स (masculine nominative singular of ta त) – that

tu तु – do

dīrghakāla दीर्घकाल = long time

nairantarya नैरन्तर्य = without interruption

satkāra सत्कार = honor and reverence

sevito सेवितो = well attended to 

dr̥ḍhabhūmiḥ दृढभूमिः – dṛḍha दृढ + bhūmi भूमि firmly established

When your practice is well attended to, with honor and reverence, for a long time, without interruption, it will become firmly established.