The texts of the Vedas are known as Samhitas. Within these Samhitas there are portions known as Mantras, which contain prayers in the form of potent sound compounds revealed to great seers for different purposes.
In vedas Sutra denotes a distinct type of literary composition, based on short aphoristic statements, generally using various technical terms. This literary form was designed for concision, as the texts were intended to be memorized by students in some of the formal methods of scriptural and scientific study (Sanskrit: svādhyāya). Since each line is highly condensed, another literary form arose in which commentaries (Sanskrit: bhāṣya) on the sutraswere added, to clarify and explain them.
In Brahmin lineage, each family is supposed to have one Gotra, and one Sutra, meaning that a certain Veda (Śruti) is treasured by this family in way of learning by heart.