Asat Saṅga (Materialistic Association) was first published in Sajjana Toṣaṇī Vol. 11, issue 6 in 1899. In this article, Bhaktivinoda Ṭhākura specifically defines two types of asat-saṅga, namely the strī-saṅgī (one attached to women) and kṛṣna-abhakta (one who is not a devotee of Kṛṣṇa)
Asat-saṅga Parityāga (Abandoning Bad Association) was published in Sajjana Toṣaṇī, Vol. 4, Issue 5 in 1892. Bhaktivinoda Ṭhākura writes about the necessity of rejecting bad company, and especially describes Mahāprabhu’s phrase ’strī-saṅgi’ - being overly attached to one’s wife and not attached to Kṛṣṇa.
There are two types of saṅga - association and attachment. One who is serious about advancement in bhakti should avoid bad association completely. Bhaktivinoda Ṭhākura ellucidates upon this point in this article, "Saṅga-tyāga (Giving up the association of non-devotees)" from Vol.10 of Sajjana Toṣaṇī.
This article "Jana-saṅga (Association with wordly-minded persons)" is the fifth in a series of articles published in the 10th Volume of Sajjana Toṣaṇī which deals with the six things that are favourable to bhakti and the six things that are unfavourable according to the second and third verses of Śrīla Rūpa Gosvāmī’s Upadeśāmṛta. This fifth article deals with Jana-saṅga – Association with wordly-minded persons - Bhaktivinoda Ṭhākura describes the glories of sādhu-saṅga and the dangers of asat-saṅga.