Ramanuja's Gita Bhashyam - Chapter 2 - sloka 48

The entire content of this mail is from Swami Adidevananda's translation of  Ramanuja's Gita Bhashya, published by Ramakrishna Mission.

The Key to Yoga - 45-53

1 Gita Sloka every day - Chapter 2 - Samkhya Yoga - Sloka 48

Yogasthah kuru karmani sangam tyaktva dhananjaya I

Siddhi asiddhyoh samah bhutva samatvam yoga uchyate II sloka 48

योगस्थः कुरु कर्मणि सङ्गं त्यक्त्वा धनञ्जय ।

सिद्धि असिद्ध्योः समः भूत्वा समत्वं योग उच्यते ।। श्लोक ४८ 

Abandoning attachment and established in yoga, perform works, viewing success and failure with an even mind. Evenness of mind is said to be Yoga.

Abandoning the attachment to kingdom, relatives etc., and established in yoga, engage in war and such other activities. Perform these with equanimity as regards success and failure resulting from victory etc., which are inherent in them. This equanimity with regard to success and failure is called here by the term Yoga. Yoga is equanimity of mind which takes the form of evenness in success and failure.