Here, two great fruits, devotion to Shree Krishna and the cause of Bhakti - Satsang, are explained to be the cause of the various desirable qualities in man such as knowledge etc. Indeed Bhakti and Satsang should be accepted as the benefits or fruits of those with righteous qualities. They are their own benefits.
This Shloka is an extention of the previous in some ways. In the previous Shloka, we discussed the greatness of Bhakti. In this Shloka, Satsang along with Bhakti is considered. It is argued that Bhakti (and Satsang) can bear fruits of Moksha, but here the Lord suggests that Bhakti and Satsang are in themselves the fruits of the action and so one can be content through such action.
Acrura in Shrimad Bhagwat explains that Satsang is the cause of Bhakti. Satsang is loosely explained as association with a saint or righteous person. Without Satsang, Bhakti cannot progress. ‘Sat’ means truth and ‘Sang’ means association, therefore Satsang should be understood as association with the truth, be it saints, Shastras, God, temples etc. Lord Swaminarayan has spoken wonderfully about Satsang in the Vachnamrut that is worthy of study.