Declension table of ?śāstravat

Masculine	Singular	Dual	Plural
Nominative	śāstravān	śāstravantau	śāstravantaḥ
Vocative	śāstravan	śāstravantau	śāstravantaḥ
Accusative	śāstravantam	śāstravantau	śāstravataḥ
Instrumental	śāstravatā	śāstravadbhyām	śāstravadbhiḥ
Dative	śāstravate	śāstravadbhyām	śāstravadbhyaḥ
Ablative	śāstravataḥ	śāstravadbhyām	śāstravadbhyaḥ
Genitive	śāstravataḥ	śāstravatoḥ	śāstravatām
Locative	śāstravati	śāstravatoḥ	śāstravatsu

Compound śāstravat -

Adverb -śāstravantam