Karika 51

ऊहः शब्दोऽध्ययनं दुःखविघातास्त्रयः सुहृत्प्राप्तिः।
दानं च सिद्धयोऽष्टौ सिद्धेः पूर्वोऽङ्कुशस्त्रिविधः॥ ५१॥

Translation by Henry Thomas Colebrooke (1837): Reasoning, hearing, study, prevention of pain of three sorts, intercourse of friends, and purity (or gift) are perfections (or means thereof). The fore-mentioned three are curbs of perfectness.

Translation by John Davies (1881): The eight perfections (or means of acquiring perfection) are reasoning (ūha), word or oral instruction (sabda), study or reading (adhyayana), the suppression of the three kinds of pain, acquisition of friends and liberality (dāna). The three fore-mentioned (conditions) are checks to perfection.

Translation by Ganganath Jha (1896): The eight Powers (i.e., means of acquiring them) are reasoning, oral instruction, study, three-fold suppression of pain, acquisition of friends, and purity. The three before mentioned (Error, &c.) are checks to these (Powers).

Translation by Nandalal Sinha (1915): Argumentation, Word, Study, the three Preventions of Pain, Acquisition of friends, Charity or Purity are the eight Perfections. Those mentioned before Perfection are the threefold goad to (Ignorance and suffering).

Translation by Har Dutt Sharma (1933): The eight Attainments are reasoning, oral instruction, study, the three-fold suppression of misery, intercourse of friends and gifts. Those mentioned before (ignorance, incapacity and contentment) are the three-fold curb on attainments.

Translation by Radhanath Phukan (1960): The eight ways to attain true knowledge are: (i) independent thinking and reasoning (by a man of genius), (ii) oral instructions, (iii) study, (iv, v & vi) instructions as to how to suppress the three kinds of misery, (vii) friendly discussion and (viii) gifts which serve the purpose of acquiring true knowledge; those three mentioned before, i.e., Viparyaya, Aśakti and Tuṣṭi are hindrances to attainment of true knowledge.

Translation by Swami Virupakshananda (1995): Reasoning, oral instruction, study, the three-fold suppression of pain, acquisition of well-wishers, and purity (or charity) are the eight forms of success. The three mentioned before are the three restrainers of siddhi (or success).

Translation by G. Srinivasan (recent): Knowledge gained through research on vibratory or oscillatory stress caused by colliding interactions, follow three modes of action (as compressive, resonant and radiating guna modes) leading to intensive super positioned, divergent, or synchronised states, raised to the eighth power in the coherent mode. The original state prior to the interaction has been established to be in a controlled, compressed, cubic, volumetric state, raised to the third power.