The sixth son is called the Svishtakrit, for him oblations became Shveta; Udagdvara oblations are always made in his honour.
उदग्द्वारं हविर्यस्य गृहे नित्यं प्रदीयते। ततः स्विष्टं भवेदाज्यं स्विष्टकृत् परमः स्मृतः॥