Daivajna Vallabha · Attributed to Varahamihira
Chapter 4 · Going and Coming: General Rules
सामान्यगमाऽऽगमाध्यायः
षष्ठत्रिकोणसंस्थैः पापैश्च पापसंदृष्टैः ।गमनागमनं च वाच्यं स्थिरलग्ने चेच्चरे तु विपरीतम् ॥ ६ ॥
Bad planets may be in the 6th, 5th or 9th house, and bad planets may look at them. If the rising sign is fixed, then say there will be going and coming. If it is moving, the result is the opposite.
Simple meaning: Bad planets in the 6th, 5th or 9th house: with a fixed rising sign, travel happens; moving, it does not.
चन्द्रतोऽथ् यदि वा विलग्नतो द्वादशद्वितयराशिगामिनः ।
Venus, Jupiter and Mercury in the 12th and 2nd from the Moon or rising sign: no going, no coming.
बलेन सर्वोत्तमतामुपागतो ग्रहो गृहे यावति लग्नतो भवेत् ।
The strongest planet's house number from the rising sign gives the months before the traveller returns.
चरांशकस्थे किल काल एष स्थिरांशके तद्विगुणस्तु वाच्यः ।
Moving sign's navamsha: that time. Fixed: twice the time. Dual: three times the time.