अभ्यासेऽप्यसमर्थोऽसि मत्कर्मपरमो भव।मदर्थमपि कर्माणि कुर्वन् सिद्धिमवाप्स्यसि
abhyāse ’py asamartho ’si mat-karma-paramo bhava mad-artham api karmāṇi kurvan siddhim avāpsyasi
And if you are not strong enough to practice concentration, then devote yourself to My service, do all your acts for My sake, and you will still attain the goal.
Translated by Shri Purohit Swami
If you are unable to practice even this Abhyasa Yoga, be intent on doing actions for My sake; even by doing actions for My sake, you will attain perfection.
Translated by Swami Sivananda
Word meanings (from the gita/gita dataset)
abhyāse—in practice; api—if; asamarthaḥ—unable; asi—you; mat-karma paramaḥ—devotedly work for me; bhava—be; mat-artham—for my sake; api—also; karmāṇi—work; kurvan—performing; siddhim—perfection; avāpsyasi—you shall achieve